Novel tetraphenol compound, preparation method and application
A tetraphenol-based compound technology, applied in new tetraphenol-based compounds and its preparation method and application field, can solve the problems of increasing glass transition temperature, unfavorable control of curing process, unfavorable intramolecular cyclization, etc., to achieve high glass Transformation temperature, easy industrial production, high toughness effect
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Embodiment 1
[0056] first step:
[0057] Add 4270g of p-hydroxybenzaldehyde, 2520g of 1,4-dibromobutane, 6400g of potassium carbonate, and 200g of potassium iodide into the reactor, and stir and react in ethanol solution at 50-120°C for 10 hours; The obtained product was precipitated in the form of crystals; then the filtered crystals were washed with water, recrystallized with ethanol solution, and dried to obtain a light yellow solid product with a yield of 93%.
[0058] Step two:
[0059] Dissolve the first step solid product of 792g in 2500g phenol, add 108g of catalyst p-toluenesulfonic acid, 87g of catalyst anhydrous zinc chloride, stir and react at 40°C for 24 hours; wash with water after the reaction, and distill; the obtained crude The product was dissolved in ethanol, precipitated in water, and dried to obtain a red solid with a yield of 91%.
[0060] The proton nuclear magnetic spectrum of the synthetic tetraphenol base compound of embodiment 1 sees figure 1 , the result is a...
Embodiment 2
[0063] In this embodiment, during the preparation of tetraphenol-based compounds, 2520 g of 1,4-dibromobutane was replaced by 1830 g of 1,2-dibromoethane, and 6400 g of potassium carbonate was replaced by 4200 g, and the others were the same as in Example 1.
Embodiment 3
[0065] In this embodiment, during the preparation of tetraphenol-based compounds, 2520 g of 1,4-dibromobutane was replaced by 2847 g of 1,6-dibromohexane, and 6400 g of potassium carbonate was replaced by 1300 g. Others were the same as in Example 1.
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